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How to Fix Common Bifold Doors Repair Problems Bifold doors are a stylish, stylish way of connecting living spaces. As with all door systems, they can have issues that impact their performance. It is important to thoroughly clean your bifold doors to ensure they are operating at their best. This can also help keep dirt from accumulating that could interfere with their smooth operation. Loose Hinges Contrary to conventional closet doors, bifold doors are hinged in the middle and fold in a